Steam poll compromised by cybercafe systems
In China, there are more and more Internet cafes, but also facilities for farm and bot actions in games. The PCs used are used daily by numerous users and each of them has been individually counted by Steam. This became particularly visible in August 2017 as the share of quad-core systems with Windows 7, GeForce graphics card and Chinese system language increased. Steam now uses filters and changes the analysis so that it is no longer user-based but PC-based.

and : ...Doubts remain about the informative value
To what extent the current figures are closer to reality than before remains to be seen. The details of the "Steam Hardware Survey" should also be treated with caution in the future.